Oil pump



May 1, 1934. c E, JA B 1 1,956,865

OIL PUMP Filed Nov. 5. 1951 INVENTOR.

A TTORNEY.

Patented May 1, 1934 OIL PUMP Clarence E. Jacobs, Detroit, Mich.,assignor to Industrial Wire Cloth Products Corporation, Wayne, Mich., a.corporation of Michigan Application November 5, 1931, Serial No. 573,225

3 Claims.

The present invention relates to screened pump inlet chambers for thelubricating pumps of internal combustion engines and more particularlyto an inlet chamber and pump com- 5 bination.

In the usual automotive engine, the oil pump is mounted in the crankcaseto one side of the center line and the inlet therefor does not take oilfrom the desired point unless a suitable conduit is provided to extendto the center line.

Heretofore, one of the methods of accomplishing this result has been tooffset from the pump the screen chamber and to provide a relatively longconduit inside the latter and secured by soldering or other means.

This is objectionable as expensive and because of the relatively largepercentage of defective assemblies.

Among the objects of the present invention is to overcome thedifiiculties encountered in the above described devices and to provide aconstruction which is more economical to construct and which is lesslikely to be defective.

Other objects will readily occur to those skilled in the art uponreference to the following description and the accompanying drawing inwhich:

c Fig. 1 is a more or less diagrammatic side elevation of part of anengine with a part broken away to show the installation.

Fig. 2 is a longitudinal vertical section taken substantially along line22 of Fig. 3 and looking in the direction of the arrows, but showing inaddition and in similar section the pump itself; and

Fig. 3 is a plan view of the pump pad and screen chamber with the pumpremoved, corresponding to a horizontal section substantially on the line33 of Figure 2 and looking in the direction of the arrows.

In the Figs. 1 and 2, is shown an oil pump ,10 comprising a pair ofmeshing gears 11 and 12 fitting in a housing 13, the gear 11 beingsecured to a drive shaft 14 and the gear 12 being provided with a shortshaft 15 having a bearing in a recess 16 in housing 13. At 17 isindicated the delivery conduit of the pump.

The open lower side of housing 13 is closed by means of a pad 20, asuitable gasket 21 being provided. This pad 20 is smooth on top andprovided with openings 22 and 23, the latter receiving the lower end ofshort shaft 15 together with a suitable bushing 24. The-opening 22 isthe pump inlet.

The underside of pad 20 is provided with a depression 30, communicatingwith opening 22, and forming one half of a conduit leading to saidinlet.

As shown the pump 10 is mounted upon pad 20 and the latter in turnmounted upon the screen chamber 35, suitable openings being provided forbolts or screws 31 by means of which the elements are fixed together.

The screen chamber 35 comprises a bell member 36 having its upper sidesomewhat depressed as indicated and in the depressed portion there bell35) located stud 40 by means of which the bowl shaped screen 41 issecured with its edge up within the bell 35.

If desired, a plate or plates 45 may be fixed to the under side of thebell top to serve as better anchorage for screws 31.

Now having described the invention and the preferred embodiment thereof,it is to be understood that the said invention is to be limited, not tothe specific details herein set forth, but only by the scope of theclaims which follow:

1. In combination with an oil pump havinga base with a pump inlettherein, a member having a screened inlet remote from the pump inlet,upon which member said pump base is mounted, and means for conductingoil to the pump inlet from the screened inlet of said member, comprisinga conduit formed by a depression in the top of said member and aco-operating recess in the under face of the pump base.

2. In combination with an oil pump having a base with a pump linlettherein, a bell member having a screened inlet and upon which the pumpbase is mounted, the bell having a depression in its top portion coveredby a pump portion and forming a chamber between the pump base and bellcommunicating with the pump inlet, and said depression having saidscreened inlet therein at a point remote from the pump inlet.

"3. In an engine oil pump including a pair of intermeshing pump gears, ahousing therefor having an outlet and a closure plate having an inlet, ascreen for said inlet, a bell housing said screen, means for mountingthe closure plate upon said bell and said screen within said bell, saidclosure plate and bell cooperating to form a chamber communicating withthe inlet and forming as well a conduit extending from said CLARENCE E.JACOBS.

